Barrel mount for firearms



MarCh 1955 B. v. BOROSZEWSKI 2,702,953

BARREL MOUNT FOR FIREARMS Filed May 27, 1954 2 Shee ts-Sheet 1 INVENTOR 8 ERUNON V BOPOSZEWSKI BY /M 7? ATTORNEY March 1955 B. v. BOROSZEWSKI 2,702,953

BARREL MOUNT FOR FIREARMS Filed May 27, 1954 2 Sheets-Sheet 2 6O 44 5a 44 9 INVENTOR BRUNON v. BOROSZEWSKI BY 7M ATTORNEY BARREL MOUNT FOR FIREARMS Brunon V. Boroszewski, Buffalo, N. Y. Application May 27, 1954, Serial No. 432,823

7 Claims. (c1. 42 7s This invention relates generally to firearms and, more particularly, to means for supporting the barrel and action of a rifle on a rifle stock to obtain the best accuracy with a given gun and ammunition.

Heretofore, it has been the general practice to bed the barrel of a rifle in a stock so that the barrel is securely anchored at the breech through the action to the stock by bolts and either securely anchored or fastened near or adjacent the forestock or supported in spaced relation to maintain clearance between the barrel and the forestock.

However, where such a bedded rifle is employed in bench shooting or wherever extreme accuracy is required, it has been found that the tight fit at the breech and/or at the forestock causes variations in the barrel and extreme accuracy is not obtainable. Some of the factors which adversely affect the prior bedding methods are weather conditions which cause the wood stock to swell, contract, twist and warp; heating of the barrel during firing; reaction forces generated as the projectile travels down the bore; barrel jump and/ or vibration from shot to shot and the like.

it is, therefore, a primary object of this invention to provide new bedding means for barrels whereby changes in the stock within wide limits are not transmitted to the barrel and changes in the barrel length due to expansion and contraction and those due to reaction forces and the like are not constrained by the stock.

A further object is to provide such a mount whereby horizontal alignment of the barrel is maintained.

Another object is to provide a bedding means for a rifle whereby substantially universal movement may be had between the barrel and the stock.

Another object is to provide rifle bedding means that is relatively simple as to its parts, easy to install, and relatively inexpensive to manufacture.

These and other objects and advantages are provided by the bedding means for a rifle which generally comprises a first mounting member adapted to carry one end of the barrel having a spherical peripheral surface, a first base member having a corresponding internal spherical bearing seating the spherical peripheral surface of said first mounting member, means securing said first base member to a stock, a pin projecting radially from the spherical surface of one of said members and engaging a limiting slot in the spherical surface of the other of said members whereby movement of said first mounting member with respect to said first base member is restricted to rotation about the axis of the pin and to rotation in a single plane including the axis of the pin, a second mounting member slidably carrying the other end of the barrel and having a spherical peripheral surface, a second base member having a corresponding internal spherical bearing seating the spherical peripheral surface of said second mounting member, and means securing said second base member to a stock.

The disclosure of the present invention as shown in the embodiments illustrated in the accompanying drawings is not intended to be a limitation as to the size, configuration or exact arrangement of parts, but such disclosure is an illustrative example of one of the advantageous applications of the construction and principles constituting the present invention.

Referring now to the accompanying drawings in which like designations indicate similar parts throughout the several views:

2,702,958 Patented Mar. 1', 1955 Fig. 1 is a view in side elevation showing a typical rifle having a barrel and action mounted in accordance with the principles of the invention;

Fig. 2 is an enlarged fragmentary view of the rifle shown in Fig. 1;

Fig. 3 is an enlarged fragmentary view in partial section of the breech mounting means substantially on line 33 of Fig. 4;

Fig. 4 is a view substantially on line 4-4 of Fig. 2;

Fig. 5 is a view in partial section substantially on line 5-5 of Fig. 6; and

Fig. 6 is a view substantially on line 6-6 of Fig. 2.

Referring specifically to the drawings, 10 is a rifle, having a barrel 12, a wooded stock 14, and receiver mechanism 16. In the mounting system of the invention the receiver 16 is mounted on and attached to the barrel by threads as in standard practice or by other suitable means.

The barrel 12 is mounted adjacent the breech in spaced relation to the stocK by mounting means 18, while the forward end of the barrel is mounted in spaced relation to the forestock by mounting means 20 to provide a fully floating barrel and receiver and all its component parts whereby these members are left free and clear at all points of the stock. in this manner alignment of the barrel and action is maintained without interference from the stock. lt will be understood that the particular location of the mounting means 18 and 20 and the length, shape and construction of the barrel and stock may be variously modified without departure from the principles of the invention.

Referring particularly to Figs. 2, 3 and 4, the breech mounting means 13 generally comprises a mounting ring or plate 22, and a ring support 24.

'lhe internal surface 20 of the ring 22 is adapted to engage the outer surface of the barrel 12 to provide a snug lapped fit therebetween whereby the ring will rotate and slide back and forth on the barrel within a space at least as great as the maximum longitudinal displacement which may occur during normal changes in conditions between the barrel and its stock.

'lhe outer surface 28 of the ring 22 is of a spherical configuration and engages a complementary spherical bearing surface 30 of the ring support 24. The ring support 24 may be split as at 32 and bored and tapped to receive bolts 34 to facilitate assembling of the ring 22 with the support 24 and to insure that the two surfaces 28 and 30 are closely and accurately fitted.

The lower portion 24a of the ring support 24 is securely fastened to the stock. In the drawings, the fastening means comprise a pair of bolts 36 which screw into bored and tapped openings 38 in the portion 24a and bear at the head end against the stock.

It will be seen that while the bolts 36 securely fasten the ring support 24 to the stock 14, the mounting permits universal movement between the barrel and the stock, as the barrel is free to rotate and pivot at the spherical surfaces 28 and 30 and rotate and slide at the surface contact between the ring 22 and the barrel 12.

The forward mounting means 20, as more clearly shown in Figs. 5 and 6, generally comprise a ring or mounting plate 40, a ring support 42 and a ring limiting pin 44.

The internal surface 46 of ring 40 is adapted to snugly engage the outer surface of the barrel 12. In order to prevent relative movement between these two surfaces, the ring may be press or heat fitted or welded thereto, or formed as an integral part thereof or as shown in the drawing secured thereto by one or more set screws 48.

The outer surface 50 of the ring 40 is of a spherical configuration and adapted to be engaged by a complementary spherical bearing surface 52 of the ring support 42. The support 42 may be split as at 54 and bored and tapped to receive bolts 56 to facilitate assembling of the members as hereinbefore described with reference to mounting means 18.

In the lower peripheral inner surface of the ring support 42 is provided a slot 58. The longitudinal axis of the slot is preferably parallel to the longitudinal axis of the rifle barrel 12. It will also be seen from Fig. 5 that the slot 58 does not extend to the faces of the ring support.

The circular head'of the 'limit pin 44, which is secured to v.thering 40, rides in the slot 53 andnthe width -or diameter of the head of the pin and the width of the slot are so selected that thepin head will freely rotate in the slot-about theaxiszof thei pin, but will-mot rotate or move in a direction normalvto the alongitudinal axis of the slot.

The lower portion 42a of the ring support=42v issecurely fastened to the forestock by a pair of:bolts160 which screw into the bottom of the member 24arand beartat the head end-against the stock. 7

It will be seen that while the forward mounting means 20 prevents the 'barreliand actionlZfromrotating about its longitudinal axis, thezbarrel otherwise:hassubstantial- 1y universal movement within the limitspermittedsby..the length of the 81011153, :and that lthetforwardsmount, in cooperation with the rearward mount, rprovidesi -for a full floating support for .the .barrel relative/t0 :the .gun

stock.

.It will be evident to those skilledinithe art .that various modifications may be .Lmade in .thespecific structures shown in the drawings without departing from.the..principles of theinvention. For example, while in Lthepreferred form of the invention, the .forward mount is provided with the limit spin, satisfactoryresults will be obtained when the mount with. the limit pin. issprovided at the breech and the.unlimitedrrnountiis provided at the forestock.

I claim: a

.1. A mounting device. foruelongatedimembers suchas rifle barrels and .the like, comprising .a first mounting means and a second mountingrneansspaced :vtherefrom, said first mounting means .comprisinga mounting member adapted .to carry .the elongated: member "having ..a spherical peripheral bearing surface, a baseemernben-havingiazcorresponding internal spherical bearing surface seating the sphericalxperipheral surfaceaof said mounting member, a pin projecting radially fromtthetsphericaltsurface of one oftsaid members and engaging.a.limitingrslot in the spherical surface of the other of said members whereby movementwof said mounting-member .w.ith.respect tosaidbaseJmemberds. restricted-ate rotation about the: axis vof :thepin and to. rotation in .arsingle .plane'jncluding the axisof the;pin, said. second mounting means '4 comprising a mounting member slidably carrying the -elongatedrmember andthaszingra sphericaLperipheraLbearing surface, a base member having a corresponding internal spherical bearing surface seating the spherical peripheral surface of said mounting member.

2. A mounting device as defined in claim 1 wherein the longitudinal axis of the limiting slot is positioned parallel to the longitudinalaxis of the elongated mem- 3. A mountingdevice as de'finedin claim 2 wherein the said pin projects radially from the spherical surface of the mounting member.

4. A device forbedding-a firearm barrel in a stock comprising a first mounting member adapted to carry one end of the barrel -having:a sphericalperipheral bearing surface, a first base member having a corresponding internal spherical bearing surface seating the spherical peripheral surface of said first mounting member, means securingv said .firstgbase memberztoia stock, a pin :projecting radially from.thensphericalasurface ofv one of said members and engaging ari limitingslot in the spherical surface of the other of said members wherebymovement of. said first .mountingamember'zwith respect to said first baseamemberis restricted to-rotation about the axis of the pin and to rotationoiniazsingle plane=including the axis"of=the1-pin," a :secondumounting member slidably carrying the rothereend of: the zbarrelxand having. a---spherical peripheral :bearingnsurface a second base member having a corresponding internal spherical bearing surface seatingtheuspherical peripheralrsurface-of said second mounting :member, 1 and'imeans securing said second base member .to a stock.

5.1The invention ;as.idefined-in .claim 4 wherein the longitudinal axis of the-limiting slot'is positioned parallel to 'therlongitudinaL'axisiof the barrel member.

=6. The invention asidefined'inzclaim 4 wherein the said pin projects' radiallyv from thevspherical surfaceof said first im'ountingzmember.

7. Therinvention: defined in claim 4 wherein said first base member is secured adjacent the forward end of the stock and'saidsecond base' member is secured to the stock adjacent theibreech.

No references cited. 

